Why would you use Unrelenting shout to kill anyone?
You get nothing for it except giggles
No skill ups, most times the loot on the body is lost or too far away to be worthwhile
My favorite shout is Sprint
Great for traps, for quick traveling, for advancing on archers and doesnt rob me of anything
It does svck losing the ability to loot the corpses when you throw someone off a cliff, but at least you survive the fight.
As an archer, I love it. If something manages to close the gap and get into melee range, I can send it flying, and get off another 2-3 shots before it even gets back on its feet - which is usually all it takes to finish the job. Has saved my ass more than once, especially against multiple enemies.